词根：agon = struggle, 表示“挣扎, 斗争”
agony n. 痛苦
agonize v. 感到苦恼（agon+ize）
antagonize v. 反对，对抗（ant[=anti反]+agon+ize→反过来斗争→对抗）
antagonist n. 对手（ant[=anti反]+agon+ist→反过来斗争之人→对手）
词根词缀：agon-
【来源及含义】Greek: struggle, a contest, to contend for a prize; also, to lead, set in motion, drive, conduct, guide, govern; to do, to act; by extension, pain
【相关词根词缀】Cross references of word families related directly, or indirectly, to: "master, lead, leading, ruler, ruling, govern": -agogic; arch-; -crat; dom-; gov-; magist-; poten-; regi-; tyran-.